Effect of prevention for chloride ion using both of CA2 and expansive admixture to low heat portland cement

Takafumi Ito, Takeshi Iyoda

研究成果: Conference contribution

抜粋

Salt damage is one of the serious causes of deterioration in reinforce d concrete. However, when building mass concrete under salt damage environment, we have to use cement with a heat suppression effect which has low resistance for chloride ion. In this research, we focused on the CA2 which is admixture for salt damage prevention.CA2 reacts with calcium hydroxide from cement hydration and makes hydrocalumite. Thus, the soluble chloride ion is reduced. Finally, concrete using CA2 has high resistance for salt damage. LPC concrete using CA2 has low resistance for chloride ion than OPC concrete using CA2. After that, we had XRD measurement, and we have confirmed that hydration product is different in LPC and OPC when adding CA2 and expansive admixture. We think that the difference of hydration product is reason for difference of salt damage prevention by difference of ability to immobilize chloride ion.

元の言語English
ホスト出版物のタイトルLife-Cycle of Engineering Systems: Emphasis on Sustainable Civil Infrastructure - 5th International Symposium on Life-Cycle Engineering, IALCCE 2016
出版者CRC Press/Balkema
ページ1319-1326
ページ数8
ISBN(印刷物)9781138028470
出版物ステータスPublished - 2017
イベント5th International Symposium on Life-Cycle Engineering, IALCCE 2016 - Delft, Netherlands
継続期間: 2016 10 162016 10 20

Other

Other5th International Symposium on Life-Cycle Engineering, IALCCE 2016
Netherlands
Delft
期間16/10/1616/10/20

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Safety, Risk, Reliability and Quality

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  • これを引用

    Ito, T., & Iyoda, T. (2017). Effect of prevention for chloride ion using both of CA2 and expansive admixture to low heat portland cement. : Life-Cycle of Engineering Systems: Emphasis on Sustainable Civil Infrastructure - 5th International Symposium on Life-Cycle Engineering, IALCCE 2016 (pp. 1319-1326). CRC Press/Balkema.